Mr Papalia said he also launched an agreement with STA Travel to encourage more young Brits and Germans to travel to WA on working holidays.

"It was an extremely valuable and productive visit," he said.

The state government had spent $14 million to upgrade a terminal at Perth Airport.

Mr Papalia told parliament on Tuesday the government also spent an additional $2.85 million on a joint promotional campaign with Qantas to "promote Perth–London flights and develop Perth as the western hub for Qantas".

The six-day trip at the end of March also included a stop in Germany to meet with a shipbuilding company which is working on the Australian government's $3.5 billion offshore patrol vessel program.

A bureaucrat from the Department of Jobs, Tourism and Innovation also spent $2327 in taxpayer funds flying to Germany for this meeting.

The report revealed taxpapers spent $773,454 sending ministers, staff and bureaucrats overseas in the first three months of 2018.